My daughter-in-law is allergic to gluten. There's a test your doctor can do to see if your son is allergic, too. I'm not a medical person(I think you should check with your doctor first to rule out other conditions), but the difference for my daughter-in-law when she went gluten-free was dramatic. You have to be careful, though and read EVERY food label - there is wheat or gluten in things you would never suspect. If you have a Whole Foods grocery store nearby, they have a pretty good selection of gluten free items. Good luck.